You have to initialize each individual value with 0 with a double for loop
ok thanks
Boom
Boom
printf("Enter the number of travellers\n");
scanf("%d", &person);
for (int i = 0; i < person; i++)
{
if (age[i] == 0)
{
printf("Enter the name of person %d\n", (i + 1));
scanf("%s", name[i]);
printf("%s , Enter your passport number \n", name[i]);
scanf("%llu", passport[i]);
printf("%s ,Enter your age \n", name[i]);
scanf("%d", age[i]);
}
}
Boom
printf("Enter the number of travellers\n");
scanf("%d", &person);
for (int i = 0; i < person; i++)
{
if (age[i] == 0)
{
printf("Enter the name of person %d\n", (i + 1));
scanf("%s", name[i]);
printf("%s , Enter your passport number \n", name[i]);
scanf("%llu", passport[i]);
printf("%s ,Enter your age \n", name[i]);
scanf("%d", age[i]);
}
}
In these, it works fine till enter your passport but after entering passport number program is terminated
sleepy
#include <stdio.h>
int main(){
Printf ("hello there\n");
Printf ("my name is Cyrus\n");
Printf ("i am using C programming\n");
Return 0;
}
....
Is this program correct?
Talula
Talula
\Device\NUL
You have to initialize each individual value with 0 with a double for loop
You don't need it tho
\Device\NUL
#include <stdio.h>
int main(){
Printf ("hello there\n");
Printf ("my name is Cyrus\n");
Printf ("i am using C programming\n");
Return 0;
}
....
Is this program correct?
Use puts print string with newline, that's better than printf
● Igor
> std::setprecision(3)
Because the max precision is 3, Only get 3 digit from decimal. 334
> std::precision(10)
The max precision is 10, 5 14049 from decimal, 1 . from dot, and 4 from floating point 30493
i think there is a way to change only the number of digits after the period*
Boom
printf("Enter the number of travellers\n");
scanf("%d", &person);
for (int i = 0; i < person; i++)
{
if (age[i] == 0)
{
printf("Enter the name of person %d\n", (i + 1));
scanf("%s", name[i]);
printf("%s , Enter your passport number \n", name[i]);
scanf("%s", passport[i]);
printf("%s ,Enter your age \n", name[i]);
scanf("%d", age[i]);
}
}
Boom
printf("Enter the number of travellers\n");
scanf("%d", &person);
for (int i = 0; i < person; i++)
{
if (age[i] == 0)
{
printf("Enter the name of person %d\n", (i + 1));
scanf("%s", name[i]);
printf("%s , Enter your passport number \n", name[i]);
scanf("%s", passport[i]);
printf("%s ,Enter your age \n", name[i]);
scanf("%d", age[i]);
}
}
why is it giving me segmentation error after printf("passport");?
Anonymous
Missed everywhere except first scanf
conko
Use puts print string with newline, that's better than printf
Interested in this, is it because efficiency consideration that puts doesn't need to parse pattern string?
conko
Or simply because puts automatically append \n at the end?
Mahsun
Anyone can speak Indian! Need your help with translation a text!
Dima
Anyone can speak Indian! Need your help with translation a text!
there’s c++ India group, try it
Dima
http://t.me/c_cpp_india
数学の恋人
I was just inspecting some C++ code and found this line,
const double PI = 2.0 * acos(0.0);
Why is it being done like this?
If it were me, I'd put the value of 20 with 21 precision level, because I remember only 20 decimal digits of pi, but max precision I believe is 15 digits so I'd stop at 15 digits
数学の恋人
but that way, anything particular about acos?
数学の恋人
I haven't investigated the acos function, but I guess it's because of it's implementation, maybe Lagrange polynomial or similar...
klimi
I haven't investigated the acos function, but I guess it's because of it's implementation, maybe Lagrange polynomial or similar...
doesn't it get optimized anyway?
数学の恋人
what do you mean?
Jerry
i have a code which im trying to add the value of a number ,
such as '0' which is 48 in ascii
i want the value 0,not 48
what should i do?
klimi
Jerry
yes yes i figured it out
数学の恋人
Oh btw any good library to make digital noise/sound in C++
数学の恋人
I'm not trying to play an audio file rather generate an audio file
数学の恋人
So I'll have to access the soundcard, give it the frequency, channels, blocks, etc. How can I achieve that on Windows system
Jerry
im trying to write in a array of char which i made
but im not succeeding to write in it
i did a pointer for the array i made by malloc
and p=*coded_str
and im trying to put number in it and its not working
im doing
p[i]=4 for instance
but i dont get it inside
anybody know what the problem is ?
数学の恋人
So I'll have to access the soundcard, give it the frequency, channels, blocks, etc. How can I achieve that on Windows system
Point me to any good reference, i find a cppnow reference but am willing to look into other stuff too just for curiosity sake
数学の恋人
im trying to write in a array of char which i made
but im not succeeding to write in it
i did a pointer for the array i made by malloc
and p=*coded_str
and im trying to put number in it and its not working
im doing
p[i]=4 for instance
but i dont get it inside
anybody know what the problem is ?
Would you mind sharing the code that you wrote?
Jerry
sorry im new to this sharing thing
数学の恋人
How come?
It's a const definition which means it has to be available during runtime thus gets computed during compile time
Jerry
https://www.toptal.com/developers/hastebin/raw/boruqutato
klimi
It's a const definition which means it has to be available during runtime thus gets computed during compile time
Oh I thought you disagreed with me
Jerry
im trying to write in the array i made its not working
\Device\NUL
Interested in this, is it because efficiency consideration that puts doesn't need to parse pattern string?
I avoid printf when print without formatting, eg printf("string no formatting and newline"); . My practice is using fputs("string", stdout) latter than printf("string") one
\Device\NUL
Clang and GCC also optimize printf with single char, examples printf("\n"); will optimized to putchar('\n');
Iwan
I avoid printf when print without formatting, eg printf("string no formatting and newline"); . My practice is using fputs("string", stdout) latter than printf("string") one
please correct printf("string)" to printf("string").
Baki
Hey, what should i do if i want clear the data form the array
Baki
Hey, what should i do if i want clear the data form the array
or if want to assign 0 value to the array then what should i do?
\Device\NUL
You can't erase memory, You could only rewrite it. That's why you can recover deleted file
Baki
memset ?
since I'm working on my college project , so in college they have not taught us memset that is why I can't use it , Is there another way to do it?
\Device\NUL
since I'm working on my college project , so in college they have not taught us memset that is why I can't use it , Is there another way to do it?
Why not searching the examples tho, there a tons of memset examples out there in the internet
\Device\NUL
The other way is using loop, iterate and assign it to zero
Baki
This code is exiting with return 0, after printf("Would you like to proceed? (Y/N)\n");
please help
\Device\NUL
About char arrays, do you really want to initialize the first member with '0' or '\0' ?
\Device\NUL
This code is exiting with return 0, after printf("Would you like to proceed? (Y/N)\n");
please help
Remained newline in input stream
\Device\NUL
I also prefer getchar() to get single char rather scanf()
Baki
About char arrays, do you really want to initialize the first member with '0' or '\0' ?
even though i've removed the 0 initialization from char array still it is exiting after printf("Would you like to proceed? (Y/N)\n");
\Device\NUL
even though i've removed the 0 initialization from char array still it is exiting after printf("Would you like to proceed? (Y/N)\n");
I mean, you want to initialize the first character with '0' Zero Number ASCII char or the NULL char ones '\0'
\Device\NUL
When you initialize not full of array's member, the rest will implicitly initialized to zero
Baki
I mean, you want to initialize the first character with '0' Zero Number ASCII char or the NULL char ones '\0'
its ok if i don't initialize with any value to the char array
\Device\NUL
sorry, I didn't understand
scanf("blabla");
getchar();
before you inputting char to getchar(), The program will end because the newline from previous input scanf() will goes to getchar()
Baki
so i should always use getchar if i want to input single character , is that what you mean?
\Device\NUL
so i should always use getchar if i want to input single character , is that what you mean?
Yes that's what i would do but that's not my point
\Device\NUL
#include <stdio.h>
int main(void)
{
char str[255] = {0}, id[127] = {0};
scanf("%254[^\n]", str);
scanf("%126[^\n]", id);
}
\Device\NUL
The program ends but i only enter one input, Why ?
\Device\NUL
Because the newline or EOF from previous input goes to the next scanf()
\Device\NUL
The way to clear the newline or EOF from previous input is placing getchar() between those scanf()
\Device\NUL
scanf("")
getchar();
scanf("");
That getchar() will eat the newline, so it doesn't go to the next scanf
Baki
ohhh, now i get it, thank you
Baki
which library should i use for getchar()?
\Device\NUL
which library should i use for getchar()?
The getchar() function is on C standard and available on <stdio.h> library
Baki
The getchar() function is on C standard and available on <stdio.h> library
still it is exiting
Baki
😭